Answer / Ved Parkash

Tableau Prep offers several advantages, including Data Blending (combining multiple data sources), Ease of Use (drag-and-drop interface), Improved Productivity (workflow automation), and Scalability (handling large datasets).

Explain collaborative filtering

1 Answers  

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A stranger uses a search engine to find something and you do not know anything about the person. How will you design an algorithm to determine what the stranger is looking for just after he/she types few characters in the search box?

1 Answers   WalMart,

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What skills do I need to be a data scientist?

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If we added one rider to the current SF market, how would that affect the existing riders and drivers?

1 Answers   Uber,

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Define naive bayes?

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What is random forests and how is it different from decision trees?

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What data structures are available in the Pandas package in Python programming language?

1 Answers   WalMart,

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Please explain gradient descent?

1 Answers  

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Can you explain collaborative filtering?

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Explain the goal of a/b testing?

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A box has 12 red cards and 12 black cards. Another box has 24 red cards and 24 black cards. You want to draw two cards at random from one of the two boxes, which box has a higher probability of getting cards of same colour and why?

1 Answers   Goldman Sachs,

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What is linear optimization?

1 Answers  

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